<div class="app-container">
  <nav class="nav-bar">
    <div class="nav-brand">我的应用</div>
    <div class="nav-links">
      <a routerLink="/about" routerLinkActive="active">关于</a>
      <a routerLink="/login" routerLinkActive="active">登录</a>
    </div>
  </nav>

  <main class="main-content">
    <router-outlet></router-outlet>
  </main>
</div>